Igmp Multicast Address Assignment

IPv4 Multicast Address Space Registry

Last Updated
2018-02-20
Expert(s)
Stig Venaas
Note
Host Extensions for IP Multicasting [RFC1112] specifies the extensions required of a host implementation of the Internet Protocol (IP) to support multicasting. The multicast addresses are in the range 224.0.0.0 through 239.255.255.255. Address assignments are listed below. The range of addresses between 224.0.0.0 and 224.0.0.255, inclusive, is reserved for the use of routing protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and group membership reporting. Multicast routers should not forward any multicast datagram with destination addresses in this range, regardless of its TTL.
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Registries included below

Local Network Control Block (224.0.0.0 - 224.0.0.255 (224.0.0/24))

Registration Procedure(s)
Expert Review, IESG Approval, or Standards Action
Reference
[RFC5771]
Note
(*) It is only appropriate to use these values in explicitly- configured experiments; they MUST NOT be shipped as defaults in implementations. See [RFC3692] for details.
Available Formats

CSV

Internetwork Control Block (224.0.1.0 - 224.0.1.255 (224.0.1/24))

Registration Procedure(s)
Expert Review, IESG Approval, or Standards Action
Reference
[RFC5771]
Available Formats

CSV

AD-HOC Block I (224.0.2.0 - 224.0.255.255)

Registration Procedure(s)
Expert Review, IESG Approval, or Standards Action
Reference
[RFC5771]
Available Formats

CSV
Address(es)DescriptionReferencesChange ControllerDate RegisteredLast Reviewed
224.0.2.0Unassigned
224.0.2.1"rwho" Group (BSD) (unofficial)[Jon_Postel]
224.0.2.2SUN RPC PMAPPROC_CALLIT[Brendan_Eic]
224.0.2.3EPSON-disc-set[SEIKO_EPSON_Corp]2005-01-01
224.0.2.4All C1222 Nodes[RFC6142]2009-08-28
224.0.2.5Monitoring Discovery Protocol[Alan_Robertson]2012-04-17
224.0.2.6BitSend MediaStreams[Carl-Johan_Sjöberg]2012-04-25
224.0.2.7-224.0.2.8rxWARN[Caleb_Bell]2012-11-19
224.0.2.9DATV streams[Grant_Taylor]2016-10-04
224.0.2.10swapapp_multicast[Applykane]2017-05-19
224.0.2.11-224.0.2.63Unassigned
224.0.2.64-224.0.2.95Intercontinental Exchange, Inc.[RIR_Admin]1996-042007-07
224.0.2.96-224.0.2.127BallisterNet[Tom_Ballister]1997-07-01
224.0.2.128-224.0.2.191WOZ-Garage[Douglas_Marquardt]1997-02-01
224.0.2.192-224.0.2.255Intercontinental Exchange, Inc.[RIR_Admin]1997-02-01
224.0.3.0-224.0.3.255RFE Generic Service[Daniel_Steinber]
224.0.4.0-224.0.4.255RFE Individual Conferences[Daniel_Steinber]
224.0.5.0-224.0.5.127CDPD Groups[[Bob Brenner]]
224.0.5.128-224.0.5.191Intercontinental Exchange, Inc.[RIR_Admin]1998-10-01
224.0.5.192-224.0.5.255Intercontinental Exchange, Inc.[RIR_Admin]2001-08-01
224.0.6.0-224.0.6.127Cornell ISIS Project[[Tim Clark]]
224.0.6.128-224.0.6.143MoeSingh[Moe_Singh]2009-09-24
224.0.6.144QDNE[Architecture_Team]2018-01-03
224.0.6.145-224.0.6.150Unassigned
224.0.6.151Canon-Device-control[Hiroshi_Okubo]2014-08-01
224.0.6.152-224.0.6.191Unassigned
224.0.6.192-224.0.6.255OneChicago multicast[Brian_Trudeau]2014-09-19
224.0.7.0-224.0.7.255Where-Are-You[Bill_Simpson]1994-11-01
224.0.8.0Cell broadcast encapsulation[Meridian_Labs_LTD][LIRNEasia]2017-10-13
224.0.8.1-224.0.8.255Unassigned
224.0.9.0-224.0.9.255The Thing System[Carl_Malamud]1998-04-01
224.0.10.0-224.0.10.255DLSw Groups[Choon_Lee]1996-04-01
224.0.11.0-224.0.11.255NCC.NET Audio[David_Rubin]1996-08-01
224.0.12.0-224.0.12.63Microsoft and MSNBC[Tom_Blank]1996-11-01
224.0.13.0-224.0.13.255WorldCom Broadcast Services[Tony_Barber]1997-01-01
224.0.14.0-224.0.14.255NLANR[Duane_Wessels]1997-02-01
224.0.15.0-224.0.15.255Agilent Technologies[IP_Admin]1997-02-01
224.0.16.0-224.0.16.255XingNet[Mika_Uusitalo]1997-04-01
224.0.17.0-224.0.17.31Mercantile & Commodity Exchange[Asad_Gilani]1997-07-01
224.0.17.32-224.0.17.63NDQMD1[Michael_Rosenberg]1999-03-01
224.0.17.64-224.0.17.127ODN-DTV[Richard_Hodges]1999-03-01
224.0.18.0-224.0.18.255Dow Jones[Wenjie_Peng]1997-01-01
224.0.19.0-224.0.19.63Walt Disney Company[Scott_Watson]1997-08-01
224.0.19.64-224.0.19.95Cal Multicast[Ed_Moran]1997-10-01
224.0.19.96-224.0.19.127Intercontinental Exchange, Inc.[RIR_Admin]1997-102007-07
224.0.19.128-224.0.19.191IIG Multicast[Wayne_Carr]1997-12-01
224.0.19.192-224.0.19.207Metropol[James_Crawford]1998-05-01
224.0.19.208-224.0.19.239Xenoscience, Inc.[Mary_Timm]1998-07-01
224.0.19.240-224.0.19.255MJDPM[Matthew_Straight]2007-03-01
224.0.20.0-224.0.20.63MS-IP/TV[Tony_Wong]1998-07-01
224.0.20.64-224.0.20.127Reliable Network Solutions[Werner_Vogels]1998-08-01
224.0.20.128-224.0.20.143TRACKTICKER Group[Alan_Novick]1998-08-01
224.0.20.144-224.0.20.207CNR Rebroadcast MCA[Robert_Sautter]1999-08-01
224.0.21.0-224.0.21.127Talarian MCAST[Geoff_Mendal]1999-01-01
224.0.22.0-224.0.22.239WORLD MCAST[Ian_Stewart]1999-06-01
224.0.22.240-224.0.22.255Jones International[Jim_Ginsburg]2007-10-31
224.0.23.0ECHONET[Takeshi_Saito]2003-02-01
224.0.23.1Ricoh-device-ctrl[Akihiro_Nishida]2003-02-01
224.0.23.2Ricoh-device-ctrl[Akihiro_Nishida]2003-02-01
224.0.23.3-224.0.23.10Telefeed[Wally_Beddoe]2003-04-01
224.0.23.11SpectraTalk[Madhav_Karhade]2003-05-01
224.0.23.12EIBnet/IP[Marc_Goossens]2003-07-01
224.0.23.13TVE-ANNOUNCE2[Michael_Dolan]2003-10-01
224.0.23.14DvbServDisc[Bert_van_Willigen]2004-01-01
224.0.23.15-224.0.23.31MJDPM[Matthew_Straight]2007-03-01
224.0.23.32Norman MCMP[Kristian_A_Bognaes]2004-02-01
224.0.23.33RRDP[Tetsuo_Hoshi]2004-06-01
224.0.23.34AF_NA[Bob_Brzezinski]2005-10-28
224.0.23.35AF_OPRA_NBBO[Bob_Brzezinski]2005-10-28
224.0.23.36AF_OPRA_FULL[Bob_Brzezinski]2005-10-28
224.0.23.37AF_NEWS[Bob_Brzezinski]2005-10-28
224.0.23.38AF_NA_CHI[Bob_Brzezinski]2005-10-28
224.0.23.39AF_OPRA_NBBO_CHI[Bob_Brzezinski]2005-10-28
224.0.23.40AF_OPRA_FULL_CHI[Bob_Brzezinski]2005-10-28
224.0.23.41AF_NEWS_CHI[Bob_Brzezinski]2005-10-28
224.0.23.42Control for IP Video[Nadine_Guillaume]2005-02-01
224.0.23.43acp-discovery[Andy_Belk]2005-02-01
224.0.23.44acp-management[Andy_Belk]2005-02-01
224.0.23.45acp-data[Andy_Belk]2005-02-01
224.0.23.46dof-multicast[Bryant_Eastham]2006-06-162015-04-23
224.0.23.47AF_DOB_CHI[Bob_Brzezinski]2005-10-28
224.0.23.48AF_OPRA_FULL2_CHI[Bob_Brzezinski]2005-10-28
224.0.23.49AF_DOB[Bob_Brzezinski]2005-10-28
224.0.23.50AF_OPRA_FULL2[Bob_Brzezinski]2005-10-28
224.0.23.51Fairview[Jim_Lyle]2006-08-07
224.0.23.52Intercontinental Exchange, Inc.[RIR_Admin]2006-08-11
224.0.23.53MCP[Tim_DeBaillie]2006-11-30
224.0.23.54ServDiscovery[Paul_Langille]2007-01-17
224.0.23.55noaaport1[Antonio_Querubin]2008-02-04
224.0.23.56noaaport2[Antonio_Querubin]2008-02-04
224.0.23.57noaaport3[Antonio_Querubin]2008-02-04
224.0.23.58noaaport4[Antonio_Querubin]2008-02-04
224.0.23.59DigacIP7[Jonathan_Niedfeldt]2008-02-22
224.0.23.60AtscSvcSig[Jerry_Whitaker]2008-12-19
224.0.23.61SafetyNET p (potentially IGMPv1)[Pilz]2009-03-13
224.0.23.62BluemoonGamesMC[Christopher_Mettin]2009-05-12
224.0.23.63iADT Discovery[Paul_Suhler]2009-05-12
224.0.23.64-224.0.23.80Moneyline[Guido_Petronio]2004-01-01
224.0.23.81-224.0.23.127Reserved (Moneyline)
224.0.23.128-224.0.23.157PHLX[Michael_Rosenberg]2004-01-01
224.0.23.158VSCP[Charles_Tewiah]2005-09-01
224.0.23.159LXI-EVENT[Nick_Barendt]2005-11-04
224.0.23.160solera_lmca[Mark_Armstrong]2006-02-09
224.0.23.161VBooster[Alexander_Pevzner]2006-03-17
224.0.23.162cajo discovery[John_Catherino]2006-03-17
224.0.23.163INTELLIDEN[Jeff_Schenk]2006-03-31
224.0.23.164IceEDCP[Oliver_Lewis]2006-07-11
224.0.23.165omasg[Mark_Lipford]2006-07-11
224.0.23.166MEDIASTREAM[Maurice_Robberson]2006-08-15
224.0.23.167Systech Mcast[Dan_Jakubiec]2006-08-21
224.0.23.168tricon-system-management[John_Gabler]2007-07-06
224.0.23.169MNET discovery[Andy_Crick]2008-01-14
224.0.23.170CCNx (not for global routing)[Simon_Barber]2009-09-24
224.0.23.171LLAFP[Michael_Lyle]2009-11-11
224.0.23.172UFMP[Albert_Berlovitch]2010-02-04
224.0.23.173PHILIPS-HEALTH[Anthony_Kandaya]2010-02-26
224.0.23.174PHILIPS-HEALTH[Anthony_Kandaya]2010-02-26
224.0.23.175QDP[Kevin_Gross]2010-03-12
224.0.23.176CalAmp WCP[Pierre_Oliver]2011-06-06
224.0.23.177AES discovery[Kevin_Gross_2]2012-08-28
224.0.23.178JDP Java Discovery Protocol[Florian_Weimer]2013-02-08
224.0.23.179PixelPusher[Jasmine_Strong]2014-06-04
224.0.23.180network metronome[George_Neville-Neil]2014-12-17
224.0.23.181polaris-video-transport[Geoff_Golder]2016-04-19
224.0.23.182-224.0.23.191Unassigned
224.0.23.192-224.0.23.255PINKOTC[Sergey_Shulgin]2008-08-12
224.0.24.0-224.0.24.127AGSC UK VVs[Andrew_Rowley]2006-06-09
224.0.24.128-224.0.24.255EM-MULTI[Soren_Martin_Sorensen]2006-08-07
224.0.25.0-224.0.28.255CME Market Data[Sarunas_Brakauskas]2007-03-22
224.0.29.0-224.0.30.255Deutsche Boerse[Jan_Drwal]2007-03-22
224.0.31.0-224.0.34.255CME Market Data[Sarunas_Brakauskas]2007-07-17
224.0.35.0-224.0.35.255M2S[Itamar_Gilad]2007-08-31
224.0.36.0-224.0.36.255DigiPlay[Robert_Taylor]2016-09-29
224.0.37.0-224.0.38.255LME OMD Addressing[Johnathan_Ryder]2017-03-24
224.0.39.0-224.0.40.255CDAS[Oyvind_H_Olsen]2007-09-12
224.0.41.0-224.0.41.255Intercontinental Exchange, Inc.[RIR_Admin]2007-11-282011-02-15
224.0.42.0-224.0.45.255MEDIAL[Media_Alliance_JSC]2008-01-15
224.0.46.0-224.0.50.255Deutsche Boerse[Jan_Drwal]2008-01-25
224.0.51.0-224.0.51.255ALCOM-IPTV[TV_System_Administrators][Ålands_Telekommunikation_Ab]2008-04-092018-02-20
224.0.52.0-224.0.53.255Euronext[Euronext_Admin]2008-07-232014-11-24
224.0.54.0-224.0.57.255Get - BCN[Arne_Hvidsten]2008-08-20
224.0.58.0-224.0.61.255Intercontinental Exchange, Inc.[RIR_Admin]2008-08-27
224.0.62.0-224.0.62.255BATS[Andrew_Brown]2008-12-24
224.0.63.0-224.0.63.255BATS Trading[Tim_Gorsline]2009-03-13
224.0.64.0-224.0.67.255Euronext[Euronext_Admin]2009-03-132014-11-24
224.0.68.0-224.0.69.255ISE[ISE-Networks]2009-05-12
224.0.70.0-224.0.71.255Intercontinental Exchange, Inc.[RIR_Admin]2009-06-162011-03-01
224.0.72.0-224.0.72.255TMX[Michael_Caravetta][Boris_Garber]2009-08-28
224.0.73.0-224.0.74.255Direct Edge[Javier_Landin]2009-08-28
224.0.75.0-224.0.75.255ISE[ISE-Networks]2010-01-22
224.0.76.0-224.0.76.255Intercontinental Exchange, Inc.[RIR_Admin]2010-02-262011-03-01
224.0.77.0-224.0.77.255Intercontinental Exchange, Inc.[RIR_Admin]2010-02-26
224.0.78.0-224.0.78.255ALCOM-IPTV[TV_System_Administrators][Ålands_Telekommunikation_Ab]2010-03-122018-02-20
224.0.79.0-224.0.81.255ISE[ISE-Networks]2010-08-24
224.0.82.0-224.0.85.255BATS Trading[BATS_Europe_NOC]2011-01-31
224.0.86.0-224.0.101.255Intercontinental Exchange, Inc.[RIR_Admin]2011-02-10
224.0.102.0-224.0.102.127Intercontinental Exchange, Inc.[RIR_Admin]2011-04-13
224.0.102.128-224.0.102.255MVS-IPTV-2[Andrew_Hoyos]2014-06-12
224.0.103.0-224.0.104.255MVS-IPTV[Adam_DeMinter][Andrew_Hoyos]2011-04-20
224.0.105.0-224.0.105.127MIAX Multicast[Ruben_Hernandez]2011-06-06
224.0.105.128-224.0.105.255MVS-IPTV3[Justin_Beaman]2017-12-04
224.0.106.0-224.0.106.255TMX[Michael_Caravetta][Boris_Garber]2011-06-16
224.0.107.0-224.0.108.255Alpha Group[Zaklina_Petkovic]2011-07-13
224.0.109.0-224.0.110.255Zaklina_Petkovic[David_Brett]2011-10-25
224.0.111.0-224.0.111.255VoleraDataFeed[Gerald_Hanweck]2011-10-25
224.0.112.0-224.0.112.255JHB-STOCK-EXCH[Clem_Verwey]2011-12-07
224.0.113.0-224.0.114.255Deutsche Boerse[Jan_Drwal]2011-12-19
224.0.115.0-224.0.115.255TMX[Michael_Caravetta][Boris_Garber]2012-06-12
224.0.116.0-224.0.116.255Intercontinental Exchange, Inc[RIR_Admin]2012-06-19
224.0.117.0-224.0.119.255ISE[ISE-Networks

In addition to unicast and broadcast support, IP also provides a mechanism to send and receive IP multicast traffic. IP multicast traffic is sent to a single destination IP address but is received and processed by multiple IP hosts, regardless of their location on an IP internetwork. A host listens for a specific IP multicast address and receives all packets to that IP address.

IP multicast is more efficient than IP unicast or broadcast for one-to-many delivery of data. Unlike unicast, only one copy of the data is sent. Unlike broadcast, the traffic is only received and processed by computers that are listening for it.

The additional elements of IP multicast include the following:

  • The set of hosts listening on a specific IP multicast address is called a host group.

  • Host group membership is dynamic, and hosts can join and leave the group at any time.

  • There are no limitations to the size of a host group.

  • A host group can span IP routers across multiple network segments. This configuration requires IP multicast support on IP routers and the ability for hosts to register themselves with the router. Host registration is accomplished using the Internet Group Management Protocol (IGMP).

  • A host can send traffic to an IP multicast address without belonging to the corresponding host group.

IP multicast addresses, also known as group addresses, are in the class D range of 224.0.0.0 to 239.255.255.255 as defined by setting the first four high order bits to 1110. In network prefix or Classless Inter-Domain Routing (CIDR) notation, IP multicast addresses are summarized as 224.0.0.0/4. Multicast addresses in the range 224.0.0.0 to 224.0.0.255 (224.0.0.0/24) are reserved for the local subnet and are not forwarded by IP routers regardless of the Time to Live (TTL) in the IP header.

The IP multicast addresses from 224.0.1.0 to 238.255.255.255 are either reserved or assigned to a multicasting application. The addresses from 239.0.0.0 to 239.255.255.255 (239.0.0.0/8) are reserved for applications that can be administratively scoped. For more information about these addresses, see "Multicast Boundaries" later in this chapter.

The following are examples of reserved IP multicast addresses:

  • 224.0.0.1 - all hosts on this subnet.

  • 224.0.0.2 - all routers on this subnet.

  • 224.0.0.5 - Open Shortest Path First (OSPF) Version 2, designed to reach all OSPF routers on a network.

  • 224.0.0.6 - OSPF Version 2, designed to reach all OSPF designated routers on a network.

  • 224.0.0.9 - Routing Information Protocol (RIP) Version 2.

  • 224.0.1.1 - Network Time Protocol.

For the latest list of reserved multicast addresses, see the Information Sciences Institute link at http://windows.microsoft.com/windows2000/reskit/webresources .

For more information about IP multicast support, see Internet Engineering Task Force (IETF) Request for Comments (RFC) 1112.

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